Apparatus for the manufacture of oiled paper



July 20, 1926. 1,593,128

L. L. LEADBETTER APPARATUS FOR THE MANUFACTURE OF OILED PAPER Filed Jan. 9, 1925 2 Sheets-Sheav 1 July 20 1926.

L. L. LEADBETTER APPARATUS FOR THE MANUFACTURE OF OILED PAPER Filed Jan. 9-, 1925 2 Sheets-Sheet v This invention has to do withapparatus Patented July 20, 1926.

UNITED STATES LOUIS L. LEADBETTEBI, OF HUNTINGTON PARK, CALIFORNIA.

APPARATUS FOR THE NCANUFACTURE OF OILED PAPER.

Application filed January for the manufacture of oiled paper.

My present invention has particular reference to the manufacture of oiled paper, that is, a paper containing or carrying oil. Oiled paper, such as I herein'refer to, is used in various industries, forexample, it is being extensively used in the fruit indus-' try for wrapping fruit. The nature of the oil employed in the paper and the oil content of the paper, varies, of course, with the uses for which it is intended and with varying conditions. In the case of paper for wrapping fruit it is desirable that the oil content e high, for instance, from ten to thirty-five per cent of oil. Further, it is desirable that the oil be impregnated in the paper so that it is carried in or throughout the body of the paper and is not simply a film or layer on the outside of the paper. In attempting to oil paper, the methods employed for waxing paper have been tried, using oil instead of wax. These methods have been more or less unsuccessful, one reason being that waxing processes are intended to put a film or layer of wax on a sheet of paper and therefore do not operate to effectively impregnate the paper even though oil is used in place of wax. Further, it has been found impossible with these methods to obtain a paper with a very high oil content.

A primary object of this invention has been to provide apparatus for successfully and practically oiling paper.

vA further object of this invention has been to provide apparatus whereby a paper can be oiled so that it obtains a high percentage of oil.

The Various objects and features of the invention will be best and more fully understood from the following detailed description of a typical form and carrying out of the invention throughout'which description reference is had to the accompanying drawings, in which- Fig. 1 is a side elevation of aportion of the apparatus employed in the manufacture of paper, being a view showing the calendar and a portion of the drier, and showing a portion of the apparatus provided by the present invention in operatin position with relation to the drier and ca endar.

Fig. 2 is a transverse sectional view of the apparatus shown in Fig. 1, being a view showing the general arrangement and rela- 9, 1925. Serial No. 1,447.

tioning of the various parts provided by the present invention and Fig. 3 is a view taken as indicated by line 3--3 on Fig. 2. i

In accordance'with the method carried out by this apparatus the paper may be formed and handled in theapparatus usually employed inthe manufacture of paper. In accordance with the invention the paper is run through the usual drying rolls andwhile it is still hot or warm and before it has been hardened or compressed by the action ,3.

of calendar rolls or other apparatus, the oil is applied to it. By applying the oil to the paper as it comes off of the drying rolls,

the oil spreads in the paper or is taken up by the paper, the cellular formation of the paper being expanded and open so that it readily receives the oil.

The paper with the oil applied to it is passed to or through the usual calendar. The action of the rolls of the calendar is to further spread the oil throughout the paper and to squeeze or compress the paper in the presence of the oil or while the oil is in and on it, causing the oil to be carried in or throughout the finished paper and not merely on the surfaces of the paper. In practice a body of oil accumulates at the calendar rolls which receive the paper from the drier which body of oil materially spreads across the paper at the rolls so that the paper enters the calendar rolls in the presence of a body or bath of oil. Upon being calendared the desired amount or in the desired manner the paper is rolled and allowed to stand in hours, say from six to twelve hours, allows the oil to become thoroughly and evenly distributed throughout the entire roll. I have found from actual operation that I can by this method manufacture a paper containing as high as thirty-five. per cent oil and roll the paper without danger of'sticking.

The apparatus provided by this invention for carrying out the method which Ihave just set forth comprises, generally, and in a simple form, an oiling unit or device 10 comprising a roller 11 and an oil SiftITYIIlg trough 12', drive means 13 for the OlllIIg device, a control 14 for the drive means,,means 15 for supplying oil to the oiling device, and means 16 for maintaining the oillng -device; at the proper temperature.

The oiling device, in accordance with the present invention 1S located ahead of the calendar 18, it being preferred to locate it tend completely across the sheet of paper be-' ing oiled. The roller is arranged parallel with the calendar rolls and is located with reference to the calendar rolls, which are to receive the paper, 'so that the paper must pass over it. The trougl1'12 is an open trough arranged in connection with the roller 11 to carry a body} of oil so that the roller runs or dips into it. In the construction shown in the drawings the roller 11 and trough 12 are formed as a unit, the roller being carried by thebearings provided at the ends of the trough: This unit is detachably mounted on' a suitablepart, for instance, the frame 19 of the calendar so that it can be removed when not required for use. In practice the unit is secured to the frame 19 of the calendar by bolts 20 and the frame of the calendar is provided at various points with holes 21 to receive the bolts 20 so that the unit can be adjusted to various heights on the frame 19.

In accordance with my invention the oil 0 carried in the trough 12 is carried to the paper by the rotation of the roller 11 and a quantity of oil applied to the paper is regulated or varied by varying the speed of rotation of the roll 11. The drier and calendar operate to feed the paper across the roll 11 at a constant speed, so therefore variation in the speed of rotation of the roller 11 will vary the amount of oil wiped from the roller by the paper passing over the roller. The drive 13 provided for the roller 11 is therefore a variable speed drive. In the particular arrangement shown in the drawings the drive is from a suitable engine or source of power (not shown) through a belt 25 running over a pulley 26. Pulley 26 is mounted on a shaft 27 carrying a conical pulley 28. A second conical pulley 29 is mounted on a counter shaft 30 and a belt 31 connects the pulleys v28 and 29. The conical pulleys are, of course, oppositely arranged so that variation in the position of the belt 31 varies the speed ratio obtained between the shaft 27 and counter shaft 30. The counter shaft 30 is connected with the shaft 32 of the roller 11 by a suitable drive, for instance, a chain drive 33. In practice, when the desired speed for the roller 11 cannot be had through t e conical pulleys the sprockets of the chain drive 33 may be varied or changed.

The control means 14: for the drive 13 may comprise an idler pulley 40 for controlling the belt 25. I have shown the idler pal-- ley carried on a pivoted arm 4.1 and a line 42 connected with the arm 41 and arranged over suitable pulleys 43 so that the arm can be operated from a handle 44 located at a suitable part of the apparatus. By operating or pulling upon the handle 44 the arm 41 is lifted so that tension is taken off" the belt 25 allowing the belt to slip on the pulley 26. The line 42 and pulleys 43 are preferably arranged so that the handle 44 is at a convenicnt point near the oiling device so that an operator can conveniently throw the oiling device out of operation when located at or near it. Further, a suitable part 50 may be provided to hold the handle 44 in actuated position and thereby hold the idler pulley released. Means provided for supplying the trough 12 with oil may comprise a suitable pump 51 arranged 'to receive oil from one or more barrels 0r tanks 52, a fluid connection 53 between the pump and trough for carrying the pumped fluid from the pump to the trough. The desired level of oil may be maintained in the troughby providing the trough with an overflow pipe 55 which may discharge into the tanks 52. Suitable control valves 56 may be provided in the connection 57 between the tanks 52 and pump 51 and suitable control valves 57 ma be provided in the pipe 55 so that the 011 may be used from one or more of the tanks as desired and when a tank is emptied it may be removed and a full one replaced without stopping operation of the apparatus. It will be apparent how these operations can be carried outby suitable manipulation of the valves 56 and 57 and by suitably connecting and releasing the tanks and the connections 55 and 57. The pump 51 may be driven from any suitable source of power for instance, from the counter shaft 30 by a belt 60.

The means 16 for maintaining the oiling device at the proper temperature may comprise steam connections with the roll and a steam pipe 62 arranged in the trough 12 to be supplied with steam from a suitable steam pipe 63. The steam after passing through the steam pipe 62 in the trough 12 may discharge through an exhaust pipe 65. Steam may be admitted into one end of the hollow roll shaft 32 from a steam pipe 63 so that it passes into the roll. The steam may discharge from the other end of the shaft through a pipe 65 The desired temperature may be maintained by suitable regulation of a control valve 66 and control valve 66 provided for that purpose in the steam lines 63 and 63, respectively.

From the foregoing description it is believed that the operation of the invention will be fully understood. The oiling device 10 is mounted on the frame of the calendar at the desired height so that the paper P' coming from the drier will pass over the lid I is set to operate the roller at the desired speed'and the valve 66 is regulated to maintain the oiling device .at the desired temperature. With the device thus operating the paper P passing from the drier to the calendar has applied to it a certain quantity of oil which oil is immediately taken up by the paper, because of the paper being warm and the cells of fibers being expanded and in condition to readily receive the oil. The oil laden paper passes from the roller 11 to the calendar rolls Where the oil is further distributed throughout the paper and where the paper is compressed and hardened or finished. From the calendar'the paper is taken while still warm and passed onto a roll 100 in which it is allowed to stand while it. cools. It usually takes several hours for the roll to cool during which time the oil becomes completely. and uniformly distributed in or throughout the paper.- It is desirable during operation to occasionally. obtain a sample of unoiled paper in order to determine the oil content of the paper being produced. A sample of unoiled paper may be had by operating the control 14 to stop operation of the oiling device long enough fora sample of paper to-pass through the apparatus without pick- 1 ing up oil. By testing this unoiled sample and a sample of. the oiled paper 1 taken im-f mediately before or after it it is possible to determine exactly what quantity of oil is being applied to the paper. i

Having described only a typical preferred form of my invention I do not wish to limit myself to the specific details hereinabove 'set forth, but wish to reserve to myself any changes or variations that may appear to those skilled in the art or an within the scope of the following claims.

Having described my invention, I claim:

Lln paper making machinery a roll to 'be arranged ahead of the calendar, means for supplying oil to the surface of the roll including an 'oil carrying trough at the roll, means for heating the oil carried in the trough, and means fordriving the roll at 'a predetermined speed.

2. In paper making machinery, a roll to be arranged ahead of the calendar, means for heating the roll, means for supplying.

oil to the surface'of the roll, and means for driving the rolls; a-predetermined speed.

3. lnpaper making machinery, a roll to be arranged ahead of the calendar, means for supplying oil to the surface of the roll including an oil carrying trough at the roll, means for maintaining a constant levela-of oil in the trough, and means for driving the roll at a predetermined speed.

' are paper making machinery, a roll to be arranged ahead of the calendar, .means for supplying oil to the surface of the roll, and a releasable drive for the roll.

5. In paper making machinery, a trough to be detachably mounted on the frame of a calendar, means for maintaimng a constant level of oil in the trough, a roll arranged to run in contact with the 011, means for heating the oil and the roll, and a releasable variable speed drive for the roll.

6. In paper making machinery, a roll to be arranged ahead of the calendar, means for supplying oil to the surface of the roll including an. oil carrying trough at the roll, means for maintaining a constant level pf oil in' the trough including an oil reservolr, an overflow from the trough the reservoir, and means for pumping 011 from the reservoir to the trough, and means for driving the roll at a predetermined'speed.

In witness that I claimthe foregoin I have hereto subscribed my name this 12 ay of December, 1924.

- LOUIS L. .LEADBETTER. 

